Aktiebolaget Carl Munters

Carl G Munters

Per Gunnar Norback

A method and apparatus for transferring energy in an absorption system according to the heat pump principle to improve the cycle efficiency thereof, in which the selected working medium is vaporized in an evaporator by heat exchange with heat source of ambient pressure and passed into a sorption station where it is brought into contact with an absorbent solution with consequent release of heat of absorption and heat of condensation. The mixture of absorbent solution and absorbed working medium is passed from the sorption station into a pressurized separating station, where the absorbent is separated from the working medium by diffusing the mixture under pressure through a semi-permeable membrane defining a zone of relatively high pressure and a zone of relatively low pressure higher than the ambient pressure, the concentrated absorbent solution being collected in the high pressure zone and the solution of working medium being received in the low pressure zone by virtue of the resultant reverse osmotic flow. The dilute solution of working medium is passed to the evaporator upon being depressurized, while the concentrated absorbent solution, upon being reduced to the ambient pressure, is passed into the sorption station.

Method and apparatus for transferring energy in an absorption heating

A method and apparatus provides conditioning of an air stream by cooling in a regenerative heat exchanger having two groups of channels separated from one another by walls through which heat exchange occurs. The air stream to be conditioned flows through one group of channels while an auxiliary air stream flows through a second group of channels the walls of which comprise wettable material maintained wet by means of water which is caused to evaporate by the auxiliary air stream to result in cooling. The wettable material provides a substantially stationary liquid layer maintained in the channels of auxiliary air flow so that evaporation takes place directly from the walls separating the two groups of channels to obtain high heat exchange efficiency. The wettable material may be wick-like absorbing material layers which eliminate the requirement of continuously flowing large quantities of water so that the evaporative surfaces may be rewetted intermittently and kept wet over a period of time prior to subsequent rewetting. This is accomplished by providing an excess amount of water. In addition, intensive rinsing of the evaporative surfaces may take place to remove dust particles and mineral deposits occurring in the water. The auxiliary air stream may be split off from the stream of air to be conditioned before and/or after the air stream has been conditioned by cooling to provide greater efficiency.

Growing community of inventors

Minusio, Switzerland

Carl G Munters